CN100484723C

CN100484723C - Primary and secondary handles for power tool

Info

Publication number: CN100484723C
Application number: CNB2005800329944A
Authority: CN
Inventors: 谢里尔·L.·帕纳西克; 凯文·M.·塔克; 龚永平; 诺贝特·K.·科沃杰伊; 詹姆斯·W.·罗宾逊
Original assignee: Illinois Tool Works Inc
Current assignee: Illinois Tool Works Inc
Priority date: 2004-09-01
Filing date: 2005-08-26
Publication date: 2009-05-06
Anticipated expiration: 2025-08-26
Also published as: CA2578771C; EP1784284A1; AU2005278791A1; CN101031391A; KR101212208B1; US20060043141A1; WO2006025008A1; JP2008511455A; US7143920B2; AU2005278791B2; DE602005024411D1; CA2578771A1; EP1784284B1; JP5074187B2; KR20070046962A

Abstract

A housing for a power tool includes a primary handle configured for accommodating a primary hand used to control the operation of the tool, the handle having a first end closer to a power source of the tool, and a second end distal of the power source, a secondary handle configured for accommodating a secondary hand, being associated with the distal end and defining a distal extremity of the tool offsetting the power source.

Description

First and second handles that are used for power tool

Technical field

The present invention relates generally to handheld power tools, and be specifically related to combustion powered fastener-driving tool, be also referred to as combustion formula instrument.

Background technology

Handheld power tools includes but not limited to brill, saw and fastener driver, and it has multiple size according to application.Usually, be used for commercial this type of instrument of using and have heavier and durable assembly to bear harsher operating environment.In some cases, make that instrument is more durable to produce unexpected result, very tired because instrument is held when long-time the use.When work is carried out on chest level or the crown, for example in the installation of the object on wall, ceiling or the crown, the weight of instrument is even more important.

Combustion-powered tool is being known in the art, and known this kind of class instrument is

The board instrument, be used for driving securing member and enter workpiece, in the patent U.S.Pat.Re.No.32452 of the common Nikolich that transfers the possession of and U.S.Pat.Nos.4522162,4483473,4483474,4403722,5197646,5263439 and 6145724 this product is described, the full content of above-mentioned patent is incorporated this paper by reference into.Similarly combustion-powered nail and staple driven tool can be from ITW-Paslode ofVernon Hills, and Illinois obtains with commercial system, and plate is

,

With

This type of instrument comprises housing, the small-sized explosive motor of packing in this housing.Engine is also referred to as fuel tank power is provided by the pressurized fuel gas tank.Battery powered power distribution unit produces spark lighting, and the fan that is positioned at the combustion chamber not only helps the efficient burning of combustion chamber, and helps servicing unit burn operation process.Engine comprises reciprocating-piston, and reciprocating-piston has the rigid driver blade that is arranged in the elongation in the single cylinder block.

When the pulling trigger, produce the gas of spark to be full of in the ignition engine combustion chamber, the piston of combination and driving chip are pushed down to clash into oriented securing member and to drive it and enter in the workpiece.Then, piston turns back to its initial position or prefiring position by the draught head in the cylinder.Securing member is with magazine-style nose spare, and the direction that is retained as suitable location at nose spare is to accept the impact of driving chip.

Traditional combustion formula fastener-driving tools uses straight formula nail casket, its each keep 75 securing members approximately.In certain operations is used, particularly in the commercial construction projects, need to drive within a short period of time the instrument of larger amt securing member.The use of coiling nail casket that can hold more securing member is very general in electronic or Pneumatic fastener driving tool, but owing to multiple reason, this type of nail casket can not be applicable to combustion formula instrument.This type of high power capacity nail casket undesirable reason in these instruments comprises that the additional weight of securing member makes operator's premature fatigue, and the operation nail casket required additional energy that advances of reeling also is not proved to be reliable.

Except the size of the nail casket of conventional combustion tools, the weight of conventional tool, balance and the design of whole work efficiency also are unsuitable for large volume commercial building application etc. in application.Usually, when this type of instrument is used to high lighting rate when installing, near or surpass 100 securing members of per minute, the design of instrument work efficiency is keeping the operator that instrument is become important aspect satisfied.In this type of is used, the operator grasps instrument with fastener drive in the vertical surface of for example wallboard.Like this, the common level of the longitudinal axis of combustion engine or be parallel to ground usually.Because combustion engine is the reorganization part of instrument normally, apply reaction force so trend towards that the operator is made great efforts the position that control tool supporting workpiece.As a result, it is heavier that instrument trends towards the top, and this makes the operator tired in the long-time back of using.

In some applications, the operator finds to have the chance of with the hands holding instrument.This type of application include but not limited to chest level or the head on hold instrument for a long time situation.Be used for polytype power tool though auxiliary handle is known, it typically is the form of minor axis, be anchored on the tool housing with outwards outstanding.Under the situation of combustion powered fastener-driving tool, the design factor of weight and balance is crucial more, and traditional auxiliary handle is not widely adopted.

Have again, because the balance of combustion powered fastener-driving tool is very important for operator's satisfaction, and because combustion engine is heavier relatively, so the designer uses handle to locate other tool assembly for example electronic control module, battery etc.This sample is arranged and has been offset the disequilibrium that combustion engine produced.Yet the instrument disequilibrium keeps as the operation factors of the use of combustion-powered tool in commerce is used.

Relevant with another design factor of combustion powered fastener-driving tool is that instrument and/or ambient temperature effect tool performance include but not limited to that piston turns back to the igniting front position when igniting/fastener drive operation cycle finishes.Piston returns by the draught head in the tool's engine and realizes, this type of air pressure is subjected to external temperature influence, particularly under awfully hot or terribly cold condition.

Operation factors during combustion-powered tool uses is the external temperature influence tool performance.Under lower environment temperature, need more fuel to obtain required burning.Yet conventional tool can not be regulated according to the variation of ambient conditions.

The another design factor of this type of instrument is the conventional combustion tools used in commercial building is used because of nail casket, nose spare and supplies to from the nail casket between the securing member of nose spare closely that the gap has the trend of obstruction.Frequent jams has increased the disappointment of operator to this type of instrument.

Therefore, need a kind of power tool, it has and can not weaken balance or add extra greater weight supplemental handle to instrument.Also need a kind of supplemental handle that is used for combustion-powered tool, it can be suitable for the integrated tool parts, includes but not limited to electronics, battery and/or device for monitoring temperature.

Summary of the invention

The demand is satisfied hand by the present invention who is used for power tool or surmounts.This handle comprises the main part or the first in command, and it is designed to hold the main hand that is used for operating trigger.Second or supplemental handle portion be designed to hold especially less important hand, and provide tie point between the casket at battery container and nail.In a preferred embodiment, the second in command is independent of the battery container and the nail casket of this instrument.

More specifically, the housing that is used for power tool comprises: the first in command, and it is designed to hold the main hand that is used to control this tool operation, and this handle has near first end in this tool's power source with away from second end of this power source; And the second in command, it is designed to be used for holding less important hand, and with this distal joint and form the end far away of this instrument depart from this power source.

Description of drawings

Fig. 1 is the side view that is integrated with the combustion powered fastener-driving tool of handle housing of the present invention.

Fig. 2 is the side view that is integrated with the combustion powered fastener-driving tool of handle housing of the present invention, and has the part cut open so that clear.

Fig. 3 is the three-dimensional view that is designed for the battery tray used with handle housing of the present invention.

Fig. 4 is the partial side view of another embodiment of handle housing of the present invention.

The specific embodiment

Referring now to Fig. 1, the combustion powered fastener-driving tool that is suitable for integrating handle housing of the present invention totally is expressed as 10.Though instrument 10 is depicted as the type described in the above-mentioned patent, other type fastener driven tool also can be thought of as and can combine with handle housing of the present invention.Instrument 10 comprises main casing 12, is generally injection plastic.In this instrument 10, the variation of casing structure is, power source 14 (preferably, combustion powered source is known, and shows by hiding) is by 16 encapsulation of power source housing, and totally is expressed as 18 independent handle housing and is connected to the power source housing and is connected to instrument.

Other critical piece of instrument 10 is a nose spare device 20, and its contact workpiece and securing member (not shown) intranasal spare is driven, and nail casket 22 carries out the supply of securing member (not shown) and is designed for to nose spare unit feeding securing member.In a preferred embodiment, nail casket 22 is convoluted, keeps the securing member (at least 150) of relatively large quantity, and the nail casket advances and provide power by the discharge gas that produces in the combustion process, described in the U.S. Patent No. of incorporating into by reference 5558264.Yet instrument 10 of the present invention can consider that also the nail casket that drives into the straight formula spring with fastener capacity of minimizing together uses.The nail casket 22 of reeling is designed for combining with nose spare device 20, so that securing member can easily supply with, and the chance of stopping up in course of conveying is also limited.Like this, the front end 24 of nail casket 22 is engaged on the accommodation section 26 of nose spare device 20 slidably.

Referring now to Fig. 1 and Fig. 2, it is 28 fixing to nose spare end 30 that handle housing 18 is shown as along power source housing 16 from fire end.As known in the art, handle housing 18 is set to along two halfbodies that also are fixed together in several fastening point 32 with securing member of vertical separation line connection.Fig. 2 illustrates second half handle housing of having removed 18.Being included on the handle housing 18 is the first in command 34, and the first in command 34 is designed to hold the main hand that is used for the control tool operation.The first in command 34 is integrated with trigger 36, and trigger 36 is designed to be used for triggering burning and other function well known in the art.The first in command 34 first end 38 is close to power source 14, and is connected to contiguous power source housing 16 and is directly connected to fuel tank chamber 40 on the instrument 10.According to application, handle housing 18 can directly be anchored on power source housing 16, maybe can be fastened to instrument 10 closely to engage the power source housing.For ease of engaging with this of power source housing 16, fuel tank chamber 40 preferably has compatible structure 41 (Fig. 1), and this compatible structure 41 has the outline of power source housing at the contact point place.In a preferred embodiment, for improving tool balance, the first in command 34 is arranged in more close nose spare end 30 rather than fire end 28.These are different with conventional tool, and handle is equidistant from two ends in conventional tool.Can find, by the first in command 34 is moved more close nose spare end 30, tool balance obviously improves, and is special when instrument 10 is used for the installation of wall, is parallel to ground usually or is horizontal usually at this medium power source, position longitudinal axis.

The first in command 34 second end 42 is the far-ends with respect to the power source 14 of first end 38.As well known in the field in this technique, the first in command 34 is preferably the shape that meets the work efficiency design, to improve the comfortable of the main instrument control hand of user.In a preferred embodiment, the battery container 44 and second end 42 are united and preferably are connected on second end 42, and are orientated the longitudinal axis that is parallel to power source 14 and fuel tank chamber 40 usually.In addition, it will be appreciated that second end 42 is connected to battery container 44 and relatively is close to the nose spare end 46 of housing rather than the fire end 48 of this housing.Therefore, when equipment battery 49 (Fig. 2), along with the first in command 34 moves as above-mentioned, battery container 44 helps the balance of the common intrinsic nose spare weight state of this type of instrument.Thereby when remaining in operating position, instrument 10 is balance more equably.

For improving operator's comfort level, handle housing 18 has the second in command 50 of the nondominant hand that is designed to hold the user, itself and second or far-end 42 associatings and form the end far away of the instrument that departs from power source 14.In a preferred embodiment, the second in command 50 has first end 52 and second end 54 that is connected to support column 56 of the nose spare end 46 that is connected to battery container 44.Can see that the second in command 50 is connected to instrument 10 by support column 56, and be independent of with the nail any of casket 22 be connected.Have, the second in command 50 is between battery container 44 and nail casket 22, and the part different with battery container 44 that be handle housing 18 again.As illustrated in fig. 1 and 2, the second in command 50 also is different from nail casket 22.

In addition, second end 54 preferably has the mounting points 58 that is used to follow closely casket 22.Support column 56 extends to power source 14 from nail casket mounting points 58 usually, more specifically, is connected to fuel tank chamber 40.Be contemplated that mounting points 58 can be positioned at other position on the second in command 50 according to application.In a preferred embodiment, the first in command 34, the second in command 50, battery container 44, fuel tank chamber 40 and support column 56 are handled in integrated each halfbody that is formed at handle housing 18 by injection moulding or similar products like, yet, be contemplated that parts for example can be individually formed and use that fastener technology such as screw, rivet, bonding agent and ultrasonic bonding couple together.

Referring now to Fig. 2, it will be appreciated that mounting points 58 is to be used for nail casket 22 is installed to mainly fixing on the instrument 10.As mentioned above, the front end 24 of nail casket 22 is to be slidably engaged with engaging of nose spare device 20, is beneficial to securing member and supplies with and prevent to stop up.Therefore, especially, be loaded with 150 securing members by coiling sprig casket 22, the remarkable weight of these parts need with the stable of instrument 10 and direct mounting structure.The second in command's 50 usefulness mounting points 58 realize this needs.

More specifically, nail casket 22 has wedge shape protuberance 60 is installed, and the second in command 50 forms size and makes the wedge-shaped chamber 62 that can block this protuberance.Centre bore 64 on the protuberance 60 is bonded in this chamber 62 with fastening projection 66, and the securing member (not shown) by this hole is secured together each housing halfbody, and protuberance 60 is fixed in the chamber 62.In case the halfbody of handle housing 18 is around protuberance 60 combinations, as shown in Figure 1, then this protuberance is closely supported at least four sides, and fixes and prevent obviously moving with respect to the second in command 50 by securing member.

Another feature of the second in command 50 is, is designed to be contained in 68 places schematically with the electro-hot regulator shown in the circuit board, and this electro-hot regulator is electrically connected to CPU or CPU70 (hide among Fig. 1 and show).As known in this type of instrument, CPU70 is preferably placed among the first in command 34, and the operation cycle of control tool, comprising, when electronic fuel injection is provided, fuel is injected in the combustion chamber, flammable mixture lights in the operation of combustion chamber internal fan and combustion chamber.Be contemplated that CPU70 is able to programme to receive the operation that temperature data is also correspondingly adjusted instrument 10 from electro-hot regulator 68.The advantage of electro-hot regulator 68 being put into the second in command 50 is, this electro-hot regulator is far away as far as possible from power source, and so that the indication used of environment temperature to be provided, it is not subjected to the temperature effect that correspondingly produced by heat dynamic resource 14 in common tool operation process.

Pipeline 72 is formed in the handle housing 18, and it connects and is used for keeping the chamber 74 of electro-hot regulator 68 and the chamber 76 that the first in command 34 keeps CPU70 among the second in command 50, arrives CPU to provide the space to be used for lead from electro-hot regulator.Pipeline 72 and chamber 76 structures hold design and not only are used for the electronic fuel injection but also are used for the CPU that mechanical fuel injects.Have, nail casket mounting points 58 is between electro-hot regulator 68 and power source 14 and relatively near power source, this provides the additional thermal insulation of electro-hot regulator and power source again.

Referring now to Fig. 2 and Fig. 3, can find, and to have at least one contact 80 if battery container 44 comprises the independent battery tray 78 that can be inserted in the battery container, then be convenient to the manufacturing of handle housing 18.The contact 80 of battery tray 78 be metal and structure and be arranged to and battery 49 (Fig. 2) is gone up and similarly contact terminal (not shown) joint.The main body 82 of battery tray 78 is configured to be used for holding battery 49, in case and two halfbodies of handle housing 18 in conjunction with then this pallet is positioned at the inside of housing 44.In this mode, do not need independent securing member that battery tray is held in place.

Referring now to Fig. 4, another embodiment of handle housing 18 totally is expressed as 88.The common elements of two housings is marked by identical reference marker.Main difference between the handle housing 18 and 88 is, in the latter, replaces the second in command 50 and its support column 56 integrated formation, and independently second in command's support 90 is provided, and it has handle end 92 and relative nail casket end 94.Support 90 by stiff materials for example metal or durable plastic material make, and it is secured to the first in command 34 second or far-end 42 by corresponding eyelet 96.In when assembling, the handle end 92 of support 90 is stuck between two halfbodies of combination of handle housing 88.

At nail casket end 94, nail casket eyelet 98 is used for that support 90 is fastened to the nail casket protuberance 60 is installed.Therefore, support 90 directly is connected to the first in command 34 nail casket 22.As well known in the field in this technique, the securing member that is used for support 90 is connected to instrument 10 is preferably threaded fastener, yet, also can consider other type fastener well known in the art.Support 90 forms the second in command, and with the position that provides the user to place less important hand, this less important hand does not come the control tool operation by trigger 36.In housing 88, can see that also battery container 100 is connected to far-end 42, as housing 44, but nose spare end 46 all is not connected other any parts with fire end 48.Be similar to the situation of handle end 92, battery container 100 time is stuck in battery container eyelet 102 places between two halfbodies of handle housing 88 in assembling.Battery tray 78 is positioned at battery container 100, and preferably has at least one leg or shank 104, is preferably four legs or shank 104 (hide and show) to be used to realize suitable location.

Therefore, handle housing 18,88 has the tool balance of raising, and the fixed installation structure that is used for high power capacity coiling sprig casket.The first in command 34 and battery container 44,100 are provided with and improve balance, particularly when instrument is used to construct wall.In addition, provide structure to store and to be connected the electro-hot regulator that is used to measure environment temperature.

Though this paper has described the specific embodiment of the present invention's first and second handles that are used for power tool; but those skilled in the art as can be known, can change it not depart from the scope of protection of present invention in relative broad range of the present invention and following claims with improving.

Claims

1. housing that is used to have the power tool of nose spare end and fire end comprises:

The first in command, it is designed to be used for holding the main hand that is used for the control tool operation, and described handle has near first end of the power source of instrument with away from second end of power source; And

The second in command, it is designed to be used for holding less important hand, forms the end far away of the instrument that departs from power source with described second end associating; Wherein, in order to improve the balance of described instrument, the described first in command more is close to described nose spare end rather than described fire end;

The nail casket, the described second in command provides mounting points for described nail casket; And

Support column extends to described power source from described nail casket mounting points.

2. housing according to claim 1, wherein, the described second in command has first end and second end, described first end and described first in command associating, described second end is independent of described nail casket and is connected to described instrument with being connected of described instrument at the power source place.

3. housing according to claim 1, wherein, described mounting points is the main fixture that is used for described nail casket is installed to described instrument.

4. housing according to claim 1, wherein, described nail casket has wedge shape protuberance is installed, and the described second in command is formed for blocking the wedge-shaped chamber of described protuberance.

5. housing according to claim 4 also comprises the fastening projection in the described chamber, is used to hold fixation fastener, and described fixation fastener makes described projection and described nail casket that protuberance is installed and engages.

6. housing according to claim 1 also comprises fuel tank chamber, described first end and described support column that it is connected to described power source and holds the described first in command.

7. housing according to claim 1 also comprises fuel tank chamber, described first end that it is connected to described power source and is fixed in the described first in command.

8. housing according to claim 1 also comprises battery container, itself and the described first in command's described second end associating, and the end of the contiguous described battery container of the described second in command's a end also is connected to described battery container.

9. housing according to claim 8, wherein, described battery container comprises the independent battery tray that is inserted in the described battery container and has at least one contact.

10. housing according to claim 1, wherein, described instrument comprises battery container, and the described second in command places between described nail casket and the described battery container.

11. housing according to claim 1, wherein, the described second in command is designed for keeping electro-hot regulator in the position away from power source.

12. housing according to claim 11 also comprises, is positioned at the nail casket mounting points on the described second in command, the chamber that it more is close to power source rather than is used to keep described electro-hot regulator.

13. housing according to claim 11 also comprises pipeline, it is arranged in the described first in command, is used to hold lead, and lead connects and holds the chamber of described electro-hot regulator and the chamber that is formed by the described first in command.

14. housing according to claim 1, wherein, the described second in command is independent of battery container and the described nail casket that described instrument is used.

15. housing according to claim 1, wherein, the described second in command is the support that is designed for the described first in command is fixed in the nail casket.

16. housing according to claim 8, wherein, described battery container is provided with respect to the described second in command, is used to receive the battery that is parallel to described power source configuration, to improve the balance of instrument; Also comprise fuel tank chamber, be connected to described power source, and receive the described first in command's described first end and described support column.